Which of the following is a characteristic of a serial I/O port?（）A、RJ-11 connectorB、DB-15 connectorC、DB-9 connectorD、RJ-45 connector
Which of the following is a characteristic of a serial I/O port?（）
- A、RJ-11 connector
- B、DB-15 connector
- C、DB-9 connector
- D、RJ-45 connector
相关考题：
Which of the following would be affected by setting NLS_LENGTH_SEMANTICS=CHAR?() A. All objects in the databaseB. Tables owned by SYS and SYSTEMC. Data dictionary tablesD. NCHAR columnsE. CHAR columns
What does the following function return?char foo(void){unsigned int a = 6;iht b = -20;char c;(a+b 6) ? (c=1): (c=0);return c;}
A conversion operator which converts the current String instance into raw C-style. string oftype const char*.
Given the following requirements:Create a table named TESTTAB, which has an identity column named ACTIVITYNO. Define the identity column to generate the values for the column by default. Start the values at 10 and increment by 10. Make the identity column unique. Which of the following CREATE statements will successfully create this table?（）A.CREATE TABLE TESTTAB (ACTIVITYNO SMALLINT NOT NULL GENERATED ALWAYS AS IDENTITY (START WITH 10 INCREMENT BY 10), ACTKWD CHAR(6) NOT NULL, ACTDESC VARCHAR(20) NOT NULL, UNIQUE(ACTIVITYNO))B.CREATE TABLE TESTTAB (ACTIVITYNO SMALLINT NOT NULL GENERATED ALWAYS AS IDENTITY (START WITH 1 INCREMENT BY 10), ACTKWD CHAR(6) NOT NULL, ACTDESC VARCHAR(20) NOT NULL, UNIQUE(ACTNO))C.CREATE TABLE TESTTAB (ACTIVITYNO SMALLINT NOT NULL GENERATED BY DEFAULT AS IDENTITY (START WITH 10 INCREMENT BY 1), ACTKWD CHAR(6) NOT NULL, ACTDESC VARCHAR(20) NOT NULL, UNIQUE(ACTIVITYNO))D.CREATE TABLE TESTTAB (ACTIVITYNO SMALLINT NOT NULL GENERATED BY DEFAULT AS IDENTITY (START WITH 10 INCREMENT BY 10), ACTKWD CHAR(6) NOT NULL, ACTDESC VARCHAR(20) NOT NULL, UNIQUE(ACTIVITYNO))
Which two valid declarations of a char？ （）A、 Char ch = “a”；B、 Char ch = ‘“‘ ‘；C、 Char ch = ‘cafe‘；D、 Char ch = “cafe”；E、 Char ch = ‘“ucafe‘；F、 Char ch = ‘“u10100‘；G、 Char ch = （char） true；
Which expressions will evaluate to true if preceded by the following code？（） String a = "hello"； String b = new String（a）； String c = a； char[] d = { ’h’， ’e’， ’l’， ’l’， ’o’ }； A、（a == "Hello"）B、（a == b）C、（a == c）D、a.equals（b）E、a.equals（d）
Which of the following is a performance optimization technology?（）A、QoSB、TrunkingC、SpanningD、VoIP
Which of the following utilities are used to choose which programs run at startup？ （）A、SFCB、SETDEBUGC、MSCONFIGD、REGEDIT
Which of the following commands will be run at a command prompt to determine which WindowsOS is running on the computer?（）A、VERB、Device ManagerC、VERIFYD、SET
The 8859-1 character code for the uppercase letter A is 65. Which of these code fragments declare and initialize a variable of type char with this value？（） A、char ch = 65；B、char ch = ’¥65’；C、char ch = ’¥0041’；D、char ch = ’A’；E、char ch = "A"；
Which expressions are correct to declare an array of 10 String objects？ （） A、 char str[]；B、 char str[][]；C、 String str[]；D、 String str[10]；
You executed the following code： SQL CERATE TABLE COUNTRY （COUNTRY_ID CHAR（2） CONSTRAINT COUNTRY_ID_nn NOT NULL， COUNTRY_NAME VARCHAR2（20）， CURRENCY_NAME VARCHAR2（20）， CONSTRAINT COUNTRY_ID_PK PRIMARY KEY （COUNTRY_ID）） ORGANIZATION INDEX； Which types of tables will be created automatically？（）A、 journal tableB、 clustered tableC、 mapping tableD、 partitioned table
Which of the following would be affected by setting NLS_LENGTH_SEMANTICS=CHAR？（）A、 All objects in the databaseB、 Tables owned by SYS and SYSTEMC、 Data dictionary tablesD、 NCHAR columnsE、 CHAR columns
单选题Which of the following technologies can improve convergence time following a link failure in a serviceprovider network？（）AMPLS TE FRBMPLS VPNCBFDDRSVPEVPLSFSNMP
单选题Which of the following would be affected by setting NLS_LENGTH_SEMANTICS=CHAR？（）A All objects in the databaseB Tables owned by SYS and SYSTEMC Data dictionary tablesD NCHAR columnsE CHAR columns
单选题Which of the following would be affected by setting NLS_LENGTH_SEMANTICS=CHAR?（）AAll objects in the databaseBTables owned by SYS and SYSTEMCData dictionary tablesDNCHAR columnsECHAR columns
单选题Given the following requirements:Create a table named TESTTAB, which has an identity column named ACTIVITYNO. Define the identity column to generate the values for the column by default. Start the values at 10 and increment by 10. Make the identity column unique. Which of the following CREATE statements will successfully create this table?（）ACREATE TABLE TESTTAB (ACTIVITYNO SMALLINT NOT NULL GENERATED ALWAYS AS IDENTITY (START WITH 10 INCREMENT BY 10), ACTKWD CHAR(6) NOT NULL, ACTDESC VARCHAR(20) NOT NULL, UNIQUE(ACTIVITYNO))BCREATE TABLE TESTTAB (ACTIVITYNO SMALLINT NOT NULL GENERATED ALWAYS AS IDENTITY (START WITH 1 INCREMENT BY 10), ACTKWD CHAR(6) NOT NULL, ACTDESC VARCHAR(20) NOT NULL, UNIQUE(ACTNO))CCREATE TABLE TESTTAB (ACTIVITYNO SMALLINT NOT NULL GENERATED BY DEFAULT AS IDENTITY (START WITH 10 INCREMENT BY 1), ACTKWD CHAR(6) NOT NULL, ACTDESC VARCHAR(20) NOT NULL, UNIQUE(ACTIVITYNO))DCREATE TABLE TESTTAB (ACTIVITYNO SMALLINT NOT NULL GENERATED BY DEFAULT AS IDENTITY (START WITH 10 INCREMENT BY 10), ACTKWD CHAR(6) NOT NULL, ACTDESC VARCHAR(20) NOT NULL, UNIQUE(ACTIVITYNO))
单选题Which expressions are correct to declare an array of 10 String objects？ （）A char str[]；B char str[][]；C String str[]；D String str[10]；
多选题Which three SELECT statements display 2000 in the format "$2,000.00"? （）ASELECT TO_CHAR(2000, '$#,###.##') FROM dual;BSELECT TO_CHAR(2000, '$0,000.00') FROM dual;CSELECT TO_CHAR(2000, '$9,999.00') FROM dual;DSELECT TO_CHAR(2000, '$9,999.99') FROM dual;ESELECT TO_CHAR(2000, '$2,000.00') FROM dual;FSELECT TO_CHAR(2000, '$N,NNN.NN') FROM dual;
多选题Which two valid declarations of a char？（）AChar ch = “a”；BChar ch = ‘/’ ‘；CChar ch = ‘cafe’；DChar ch = “cafe”；EChar ch = ‘/ucafe’；FChar ch = ‘/u10100’；GChar ch = （char） true；
多选题Which expressions will evaluate to true if preceded by the following code？（） String a = "hello"； String b = new String（a）； String c = a； char[] d = { ’h’， ’e’， ’l’， ’l’， ’o’ }；A（a == Hello）B（a == b）C（a == c）Da.equals（b）Ea.equals（d）